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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5264545 B1

PDFFull Text
Date of Patent:
Nov. 23, 1993

Filed:

Nov. 02, 1992

Solutions of polyimide-forming starting materials

Applicant:
Inventors:

Rainer Blum, Ludwigshafen, DE;

Hans J Heller, Hamburg, DE;

Klaus Lienert, Hamburg, DE;

Assignee:

BASF Lacke+Farben Aktiengesellschaft, Muenster, DE;

Attorney:

Oblon, Spivak, McClelland, Maier & Neustadt

Primary Examiner:

John Kight, III

Assistant Examiner:

P Hampton-Hightower

Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528353 ; 528125 ; 528128 ; 528170 ; 528172 ; 528173 ; 528176 ; 528185 ; 528188 ; 528220 ; 528229 ; 528350 ; 524379 ; 524391 ; 524600 ; 524606 ; 524607 ;
Abstract

Solutions of polyimide-forming starting materials are provided containing diamines and tetracarboxylic diesters; the tetracarboxylic diesters comprise a mixture of from 0.05 to 0.95 mol % of oxydiphthalic diesters and from 0.05 to 0.95 mol % of benzophenonetetracarboxylic diesters, biphenyltetracarboxylic diesters or mixtures thereof.

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Blum, Rainer. (1993). Solutions of polyimide-forming starting materials (U.S. Patent No. 5264545). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5264545

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